2608864197 has 4 divisors (see below), whose sum is σ = 3478485600. Its totient is φ = 1739242796.

The previous prime is 2608864189. The next prime is 2608864199. The reversal of 2608864197 is 7914688062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2608864197 - 2³ = 2608864189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2608864199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434810697 + ... + 434810702.

It is an arithmetic number, because the mean of its divisors is an integer number (869621400).

Almost surely, 2^2608864197 is an apocalyptic number.

It is an amenable number.

2608864197 is a deficient number, since it is larger than the sum of its proper divisors (869621403).

2608864197 is an equidigital number, since it uses as much as digits as its factorization.

2608864197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869621402.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 2608864197 is about 51077.0417800405. The cubic root of 2608864197 is about 1376.6297716415.

The spelling of 2608864197 in words is "two billion, six hundred eight million, eight hundred sixty-four thousand, one hundred ninety-seven".